Display Device with Sensor

1. A display device comprising: a first insulating film having a first surface and a second surface opposed to the first surface: a plurality of detection electrodes arrayed in a matrix on the first surface; and a first metal wire on the second surface, wherein a first detection electrode is one of the plurality of detection electrodes, the first metal wire includes: a first widened part, a second widened part, and a first main line between the first widened part and the second widened part, the first detection electrode overlaps the first main line and the first widened part, a width of the first widened part is larger than a width of the first main line, a width of the second widened part is larger than the width of the first main line, the first detection electrode is in contact with the first widened part via a first contact hole formed in the first insulating film, and the second widened part is entirely overlapped by the first insulating film.

2. The display device of claim 1 , further comprising scanning lines, wherein the scanning lines each extend in a first direction and are arrayed in a second direction crossing the first direction, the scanning lines include: a first scanning line, a second scanning line adjacent to the first scanning line in the second direction, a third scanning line adjacent to the second scanning line in the second direction, and a fourth scanning line adjacent to the third scanning line in the second direction; the first metal wire crosses the first scanning line, the second scanning line, the third scanning line, and the fourth scanning lines, respectively at a first crossing, a second crossing, a third crossing, and a fourth crossing of the first metal wire, the first widened part is between the first crossing and the second crossing of the first metal wire, the second widened part is between the third crossing and fourth crossing of the first metal wire, and the first main line crosses the second scanning line and third scanning line, respectively at the second crossing and the third crossing of the first metal wire.

3. The display device of claim 2 , wherein the first metal wire includes a plurality of widened parts, the first widened part is one of the plurality of widened parts, the second widened part is another one of the plurality of widened parts, and the first metal wire does not have any of the plurality of widened parts between the second crossing and the third crossing of the first metal wire.

4. The display device of claim 2 , wherein the first metal wire includes a plurality of widened parts, the first widened part is one of the plurality of widened parts, the second widened part is another one of the plurality of widened parts, and the first metal wire includes a non-coupling region not having the widened parts, between the second crossing and the third crossing of the first metal wire.

5. The display device of claim 2 , further comprising a second metal wire adjacent to the first metal wire in the first direction, on the second surface of the first insulating film, wherein a second detection electrode is one of the plurality of detection electrodes, the second metal wire includes: a third widened part, a fourth widened part, and a second main line between the third widened part and the fourth widened part, the second detection electrode overlaps the second main line, the second widened part, and the fourth widened part, a width of the third widened part is larger than a width of the second main line, a width of the fourth widened part is larger than the width of the second main line, the second detection electrode is in contact with the fourth widened part via a second contact hole formed in the first insulating film, and the third widened part is entirely overlapped by the first insulating film.

6. The display device of claim 5 , wherein the second metal wire crosses the first scanning line, the second scanning line, and the third scanning line, and the fourth scanning line, respectively at a first crossing, a second crossing, a third crossing, and a fourth crossing of the second metal wire, the third widened part is between the first crossing and the second crossing of the second metal wire, the fourth widened part is between the third crossing and fourth crossing of the second metal wire, and the second main line crosses the second crossing and the third crossing of the second metal wire.

7. The display device of claim 6 , wherein the second metal wire includes a plurality of widened parts, the third widened part is one of the plurality of widened parts of the second metal wire, the fourth widened part is another one of the plurality of widened parts of the second metal wire, and the second metal wire does not have any of the plurality of widened parts between the second crossing and the third crossing of the second metal wire.

8. The display device of claim 1 , wherein the first insulating film is made of a translucent resin material.

9. The display device of claim 1 , wherein the first insulating film is made of an inorganic material.

10. The display device of claim 1 , further comprising: a plurality of pixel electrodes in a display region; and a light-shielding layer including openings facing the respective pixel electrodes, wherein the light-shielding layer includes: a plurality of first shielding parts each extending in a first direction, and a plurality of second shielding parts each extending in a second direction crossing the first direction; one of the second shielding parts extends in parallel to the first main line and overlaps the first main line, a width of the one of the second shielding parts is larger than the width of the first main line, in the first direction, the width of the first widened part is larger than the width of the one of the second shielding part, in the first direction, and the width of the second widened part is larger than the width of the one of the second shielding part, in the first direction.

11. The display device of claim 2 , wherein the first metal wire includes a plurality of widened parts including the first widened part and the second widened part, and the first metal wire has none of the widened parts between the second crossing and the third crossing of the first metal wire.

12. The display device of claim 2 , wherein the first metal wire includes a plurality of widened parts including the first widened part and the second widened part, and the first metal wire includes a non-coupling region in which none of the widened parts is disposed, between the second crossing and the third crossing of the first metal wire.